jhubert: For white resistance it is also possible to play the second move on M19. After L17, L18, H19 let arrive to the same kô.
posetcay: It looks like an interesting alternative, but compared to main solution black could also play H19 at E19 and thats why I think it's a bit weaker resistance.
For white resistance it is also possible to play the second move on M19. After L17, L18, H19 let arrive to the same kô.